Zhang Xiaojie, Saha Prosenjit, Cao Lan, Li Huan, Kim Jinkuk
Elastomer Lab, Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Republic of Korea.
M.N. Dastur School of Materials Science and Engineering, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India.
Waste Manag. 2018 Aug;78:980-991. doi: 10.1016/j.wasman.2018.07.016. Epub 2018 Jul 14.
In this study, thiobisphenols, 4,4'-dithiobis(2,6-di-t-butylphenol), was synthesized and used as novel reclaiming agent for the chemo-thermomechanical devulcanization process of waste rubber powder (WRP). The devulcanization process was carried out in an internal mixer at 180 °C and 200 °C using different content of reclaiming agent such as thiobisphenols. The degree of devulcanization was estimated by measuring sol content, crosslink density, and Mooney viscosity of the reclaimed rubber (RR). Devulcanization conditions have been studied further with respect to the processability, and the mechanical properties of the revulcanized reclaimed rubber (REVR). Photomicrographs from scanning electron microscopy (SEM) indicate the improvement of the coherency in the REVR with increasing degree of devulcanization. Dynamic properties were also studied for REVR. Again, in order to establish the effect of thiobisphenols as reclaiming agent, the devulcanization of WRP and revulcanization of RR were also evaluated in this study.
在本研究中，合成了硫代双酚4,4'-二硫代双(2,6-二叔丁基苯酚)，并将其用作废胶粉(WRP)化学热机械脱硫过程的新型再生剂。脱硫过程在密炼机中于180℃和200℃下进行，使用不同含量的再生剂，如硫代双酚。通过测量再生橡胶(RR)的溶胶含量、交联密度和门尼粘度来估算脱硫程度。针对再硫化再生橡胶(REVR)的加工性能和力学性能，进一步研究了脱硫条件。扫描电子显微镜(SEM)的显微照片表明，随着脱硫程度的增加，REVR的内聚性得到改善。还研究了REVR的动态性能。此外，为了确定硫代双酚作为再生剂的效果，本研究还评估了WRP的脱硫和RR的再硫化。
